A mangled port upgrade caused an outage at Linx yesterday.

A spokesman for Linx (the London Internet Exchange) said a routine port upgrade introduced a problem which caused processor usage in a router to surge, leading to instability on one of its LANs.

The other LAN, provided by another vendor, took over and members had to do some quick rerouting to bypass the problem.

Everything was back up and running in 20 minutes.

The spokesman said power problems at a London hosting centre struck at the same time.

Linx provides peering (exchange of traffic) between separate networks.

Linx traffic stats are available here. ®

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